Add support for app_shell-only extension APIs

Also add a stub for an identity-related API as an example.

BUG=424651
TEST=app_shell_unittests

Review URL: https://codereview.chromium.org/660333003

Cr-Commit-Position: refs/heads/master@{#300265}

5 files changed, 78 insertions, 1 deletions

diff --git a/extensions/shell/common/api/_api_features.json b/extensions/shell/common/api/_api_features.json
new file mode 100644
index 0000000..b4a1376
--- /dev/null
+++ b/extensions/shell/common/api/_api_features.json
@@ -0,0 +1,15 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file defines extension APIs implemented under src/extensions/shell.
+// See extensions/common/features/* to understand this file, in particular
+// feature.h, simple_feature.h, and base_feature_provider.h.
+
+{
+  "shell.identity": {
+    "channel": "dev",
+    "contexts": ["blessed_extension"],
+    "extension_types": ["platform_app"]
+  }
+}
diff --git a/extensions/shell/common/api/api.gyp b/extensions/shell/common/api/api.gyp
new file mode 100644
index 0000000..3421f05
--- /dev/null
+++ b/extensions/shell/common/api/api.gyp
@@ -0,0 +1,19 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'targets': [
+    {
+      'target_name': 'shell_api',
+      'type': 'static_library',
+      # TODO(jschuh): http://crbug.com/167187 size_t -> int
+      'msvs_disabled_warnings': [ 4267 ],
+      'includes': [
+        '../../../../build/json_schema_bundle_compile.gypi',
+        '../../../../build/json_schema_compile.gypi',
+        'schemas.gypi',
+      ],
+    },
+  ],
+}
diff --git a/extensions/shell/common/api/schemas.gypi b/extensions/shell/common/api/schemas.gypi
new file mode 100644
index 0000000..13def4f
--- /dev/null
+++ b/extensions/shell/common/api/schemas.gypi
@@ -0,0 +1,20 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'sources': [
+    '<@(schema_files)',
+  ],
+  'variables': {
+    'chromium_code': 1,
+    'non_compiled_schema_files': [
+    ],
+    'schema_files': [
+      'shell_identity.idl',
+    ],
+    'cc_dir': 'extensions/shell/common/api',
+    'root_namespace': 'extensions::shell_api::%(namespace)s',
+    'impl_dir_': 'extensions/shell/browser/api',
+  },
+}
diff --git a/extensions/shell/common/api/shell_identity.idl b/extensions/shell/common/api/shell_identity.idl
new file mode 100644
index 0000000..6772bae
--- /dev/null
+++ b/extensions/shell/common/api/shell_identity.idl
@@ -0,0 +1,14 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Use the <code>chrome.shell.identity</code> API to retrieve OAuth2 tokens
+// for user accounts.  See also <code>chrome.identity</code>.
+namespace shell.identity {
+
+  interface Functions {
+    // TODO(jamescook): Implement this with options and a callback.
+    static void getAuthToken();
+  };
+
+};
diff --git a/extensions/shell/common/shell_extensions_client.cc b/extensions/shell/common/shell_extensions_client.cc
index f27cd09..8eae902 100644
--- a/extensions/shell/common/shell_extensions_client.cc
+++ b/extensions/shell/common/shell_extensions_client.cc
@@ -20,6 +20,8 @@
 #include "extensions/common/permissions/permissions_info.h"
 #include "extensions/common/permissions/permissions_provider.h"
 #include "extensions/common/url_pattern_set.h"
+#include "extensions/shell/common/api/generated_schemas.h"
+#include "grit/app_shell_resources.h"
 #include "grit/extensions_resources.h"
 
 namespace extensions {
@@ -127,6 +129,7 @@ ShellExtensionsClient::CreateFeatureProviderSource(
       new JSONFeatureProviderSource(name));
   if (name == "api") {
     source->LoadJSON(IDR_EXTENSION_API_FEATURES);
+    source->LoadJSON(IDR_SHELL_EXTENSION_API_FEATURES);
   } else if (name == "manifest") {
     source->LoadJSON(IDR_EXTENSION_MANIFEST_FEATURES);
   } else if (name == "permission") {
@@ -171,11 +174,17 @@ bool ShellExtensionsClient::IsScriptableURL(const GURL& url,
 
 bool ShellExtensionsClient::IsAPISchemaGenerated(
     const std::string& name) const {
-  return core_api::GeneratedSchemas::IsGenerated(name);
+  return core_api::GeneratedSchemas::IsGenerated(name) ||
+         shell_api::GeneratedSchemas::IsGenerated(name);
 }
 
 base::StringPiece ShellExtensionsClient::GetAPISchema(
     const std::string& name) const {
+  // Schema for app_shell-only APIs.
+  if (shell_api::GeneratedSchemas::IsGenerated(name))
+    return shell_api::GeneratedSchemas::Get(name);
+
+  // Core extensions APIs.
   return core_api::GeneratedSchemas::Get(name);
 }